METHOD AND DEVICE FOR ALARM SIGNALLING SYSTEM Russian patent published in 1996 - IPC

Abstract RU 2060555 C1

FIELD: alarm signal systems. SUBSTANCE: electric device controls penetration of tresspasser through controlled area. Effect of the device is based upon disturbance of electromagnetic filed created by aerial system followed by sequent special treatment. As a result alarm signal is more reliable and false alarm is exculded totally. EFFECT: improved automatic control. 3 cl, 2 dwg

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RU 2 060 555 C1

Authors

Mukha Aleksandr Grigor'Evich[By]

Dates

1996-05-20—Published

1992-02-28—Filed